Abstract: Patch adds elements to cleanhtml.pl's @comment_close and @comment_ok, expanding support of HTML 4 elements in comments/responses.
Reference: 384202 ("The HTML Nazi strikes again!")
Revision: Upon recommendation of 
mart, HTML elements H4, H5, and H6 were pulled from the patched list of accepted elements in comments.
Revised patch: cleanhtml.pl.127.diff
